Questions tagged [xarray]
xarray is a Python module for working with N-dimensional arrays
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Clip global data by polygon using rioxarray fails (off by 180 longitude)
I want to extract CMIP6 climate data within polygons defined by a selection of the Large Marine Ecosystems of the world. The data(CMIP6) are found in ranges from 0 to 360 degrees longitude, while my ...
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xarray slicing across the antimeridian
I'm just starting with using xarray for working with n-dimensional NetCDF datasets. I particularly like the techniques for slicing using both indexes and labels (isel and sel):
import xarray as xr
ds ...
- 8,758
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Using Rioxarray / QGIS Projection
For the past couple weeks I have been trying to view GOES17 data from netCDF files (converted to geotif) in QGIS 3.10 but cannot get the projection to work correctly.
I have attempted numerous ...
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Converting a NetCDF from 0 to 360 to -180 to 180 via xarray
I've got an ERA5 NetCDF that's in 0 to 360 and I'd like to convert it to -180 to 180 before saving it off as a raster. I've got the current workflow set up, but am unsure of how to switch the longs.
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Mask xarray dataset using a shapefile [closed]
I have used xarray on some satellite data that I'd like to mask it using a shapefile. I have previously been doing this using a combination of PIL, numpy and gdal, but it would be cleaner to do this ...
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Extracting data within geometry (shape)
I have a NetCDF dataset which I normally call using the xarray function. I have recently been doing some transect analysis on the dataset, which looks something like this (the area between the ...
- 179
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Using rioxarray to assign spatial reference (EPSG:4326) to NetCDF built from CSV with lat long columns
I am trying to create a NetCDF from a CSV file. The idea comes from the fact that the original CSV comes with many columns, three of these representing:
a specific year ("time")
the Y ...
- 3,785
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How to save a clipped NetCDF data as a new NetCDF file in Python?
I have used xarray to clip my NetCDF file (it can be downloaded here) by a shapefile (it can be downloaded from here). Here is the code:
import xarray
import rioxarray
import geopandas
from shapely....
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Georeferencing Sentinel-3 LST product
I have been stuck attempting to convert Sentinel-3 LST netCDF data to geotiffs for a while now as part of my master's thesis.
Firstly, an introduction to the data. It is packaged as follow:
The data ...
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Open and plot a large raster with Python xarray
I have an ASCII Esri file of the type:
ncols 5201
nrows 4001
xllcorner -65
yllcorner -35
cellsize 0.025
NODATA_value -9999
-9999 -9999 -9999 255 256 -9999 -9999 ...
-9999 -9999 -9999 -9999 -9999 -9999 ...
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Memory filled with Xarray concat function
I'm facing in trouble related to the limit of my RAM. On my PC I have 32GB of RAM that is totaly filled from the concat of some DataArray.
I've create e simple function below to read a single band of ...
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Performance difference between xarray open_mfdataset and open_dataset
I'm dealing with CMIP6 Scenariomip data, I have eight ESMs precipitation grid that each one is composed by multiple netcdf files. There is one ESMs's netcdf files are seperately reserved every decade, ...
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How to mask and scale raster using rasterio?
I have been trying to read a raster file in netcdf format which I will later on sample. I need to read using the DatasetReader as float.
When I read:
ds = rasterio.open(f'netcdf:{file}:AOT_L2_Mean', ...
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